Our office receives periodic inquiries from patients often outside our
practice as what might be the cause and how best to treat.
The differential diagnosis includes, a suture remnant which might be
infected, but usually this will reabsorb after a while. I do not know
of any surgeons using non-absorbable sutures for vaginoplasty. Also a
space that has not closed in, a drainage tract. But in this case we
have to think of the nidus (or cause) and treat that. The drainage
tract is only the natural consequence of fluid (usually infected)
build up seeking to drain. Occasionally there may be a recto-vesical
fistula or a communication between bowel or bladder and the vagina.
This may close spontaneously, but if not, should be addressed for the
sake of patient comfort, as well as bringing the operation to a functional
conclusion, and to prevent possible worsening of an abscess and/or tissue
necrosis.
Drainage may be a sign of tissue necrosis, such as a devitalized
clitoris or neurovascular bundle or penile remnants attached to that
bundle. Distal nerves may regenerate, but the tract must be widely
opened first and any necrotic components must be debrided.
Smokers and diabetics and those with hyperlipidemia (elevated fats and
cholesterol), and older age patients are more prone to this unusual
situation. Inappropriate stent usage, trauma, and early sexual
activity also could be a factor.
Previous pelvic surgery can devitalize blood supply, so we cannot be
fooled by what may look normal, as skin that has been exposed to lots
of sunshine during adolescent may not bear signs of actinic effects
till years later on.
Lastly, we have noted one of the most common causes of continued pain, drainage
and irritation, is the retention of an epithelial surface under the vulvar
plate. In that the clitoris is formed from the glans penis, one has to be
assiduous about removing skin that is not intended to be exposed or hooded.
Skin exudes debris and sebum at times. Skin under skin will not heal and forms
epithelial cysts, all kinds of chronic reactions, and granulomas. Buried skin
may want to encyst. All this is highly inflammatory. The answer is to open the
area. Cauterize or apply in lesser instances a silver nitrate stick.
Harold M. Reed, M.D.